Gas-proof bung-hole stave with metal lining.



No. 662,490. Patented Nov. 27, I9U'0. F. X. MAYER.

GAS PROOF BUNG HDLE STAVE WITH METAL LINING.

(Application filed. Juiw 2, 1900.

(No Model.)

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' parts of the wooden bung-hole stave.

UNITED STATES ninr FFICE.

FRANZ XAVER MAYER, OF MUNICH, GERMANY.

SPECIFICATION forming part of Letters Patent N 0. 662,490, datedNovember 27, 1900. Application filed June 2, 1900. Serial No. 18,872.KNo model.)

To aZZ whom it may concern.-

Be it known that I, FRANZ XAVER MAYER, a subject of the Prince Regent ofBavaria, residing at No. 13 Pack street, in the city of Munich, in theKingdom of Bavaria, German Empire, have invented certain new and usefulImprovements in Gas-Proof Bung-Hole Staves with Metal Lining, of whichthe following is a specification.

' This invention relates to bung-hole staves, the outer sides and thebung-holes of which are lined with metal; and it consists in providingthe lining or bush of the bung-hole with feathers taking intosuitably-located grooves in the cross-grained wood of the stavecontaining the bung-hole.

In order to make my invention more clear, I refer to the accompanyingdrawings, in which similar letters denote similar parts throughout theseveral views, and in which Figure 1 is a longitudinal section through abung-hole stave constructed according to my invention. Fig. 2 is a sideview of the Fig. 3 is a longitudinal section through the metal liningfor the stave with the bush for the bung-hole, and Fig. 4 is abottomview of the parts represented in Fig. 3.

The stave parts a a, which are manufactured from so-called staff-wood orcaskwood, are reinforced at their outer sides, as well as laterally, bythe metal parts b b and e e, these parts being connected with the partsa a by screws taking through holes h h in the lining b b. Thegrain-crossed vwood of the stave or stave parts containing the bungholeor the metal parts forming the bunghole proper abutted up to nowstraightly (without interruptions or without feathers or the like)against the respective sides of said metal part, and the said wood partswere thus destroyed in a short time by the pushes and shocks resultingfrom driving the bung into or removing it from the bung-hole, as well asfrom the transport of the respective barrel, the reason being thatgrain-crossed wood gets easily cracked even under the action ofcomparatively slight blows, and. that the metal body containing orforming the bunghole does not completely take such blows up, buttransmits a part of their action upon the neighboring grain -crossedwood parts of the stave. Although the stave parts are acted upon by theblows only in those parts which are immediately adjacent to the bush 8,and the cracking of the wood is but a minimal one, yet this issufficient to destroy the gas-proof quality of the barrel and to makethe latter unsuited for the reception of gas-containing liquors. To doaway with this drawback, the bush 8 is provided with feathers s s, whichtake into grooves d d, provided in the adjacent grain-crossed parts ofthe stave halves a a. By this means the gas-proof closure is alwaysmaintained, because the stave parts a C6 are now very well capable ofresisting the blows and shocks in consequence of the Wood parts that arein contact with the upper and lower surfaces of the feathers havingtheir grains running parallel'to the direction of the grains in theWhole stave. The arrangement of the feathers is of course such that themetallic surface which comes in contact with the contents of the barrelis not in the least increased.

Having now described my invention, what I desire to secure by LettersPatent of the United States is- In a bipartite bung-hole stave with aconnecting metallic lining and a bush with bunghole at said lining, thecombination with the stave parts a a and the bush 8, of parallelfeathers c c forming lateral projections of said bush, and grooves 02 (1provided in the adjacent straight grain-crossed parts of the stavehalves a a and adapted to receive said feathers, substantially asdescribed.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

FRANZ XAVER MAYER.

Witnesses:

FLORENCE T. MCDONALD, ANDERSON Sons.

